Along with the practical aspect of the church, Watchman Nee saw the reality of the church. He stressed that the content of the church must be Christ living in and being lived out through all the members. Anything that is not Christ is not the church. Practically speaking, the church is Christ. Christ, therefore, is the reality of the church, and the church should be the expression of Christ.
The genuine oneness of the church is the oneness of the Spirit (Eph. 4:3). Real oneness is not the oneness of doctrines, opinions, or certain practices; real oneness is the Spirit Himself. Even though we may be one in doctrine and in the way we do things, if we are not in the Spirit, we do not have genuine oneness.
In the years 1939 to 1942, Watchman Nee was consistently burdened concerning the revelation of the Body of Christ. He was burdened to help Christians see the Body, not in a doctrinal way but in a practical way. He continually stressed that seeing the Body makes it impossible to be individualistic. Once one sees the Body, he behaves and acts in a corporate way.
Watchman Nee saw that since the Body of Christ is an organism, the Holy Spirit must have authority over everything in every part. All the activity of the Body must be under the authority and direction of the Holy Spirit.
The Holy Spirit is the reality of all spiritual things. The term spiritual things is vain and empty unless the Holy Spirit Himself is the content and reality of every spiritual thing. The Holy Spirit is the reality of the Christians' life and also the reality of their living. Whatever they are and do must have the Holy Spirit as the reality.
For the practice of the practical church life, Watchman Nee saw the necessity of authority. The authority that Christ as the Head imparts to certain members of His Body is called deputy authority. The local churches must be under this kind of deputy authority in a marvelous order. This authority is crucial for the building up of the local church. By this means the church becomes a vertical vessel. For this, submission is necessary.